PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-14:43:10
G01     74.6           33.0               10.3 +/-    0.63      17.0 +/-    0.63  0.180 / 0.210
G07     135.2          31.0               10.5 +/-    1.24      18.0 +/-    1.24  0.130 / 0.190
G11     55.1           30.3                9.4 +/-    1.95      16.4 +/-    1.95  0.070 / 0.080
G13     281.3          37.0                8.8 +/-    1.83      13.5 +/-    1.83  0.090 / 0.100
G15     308.2          13.1                7.9 +/-    1.23      20.5 +/-    1.23  0.030 / 0.020
G17     228.6          68.7               10.6 +/-    0.83      11.3 +/-    0.83  0.030 / 0.030
G19     221.8          40.8               12.1 +/-    1.49      17.4 +/-    1.49  0.070 / 0.080
G28     13.6           59.9               10.3 +/-    0.39      11.7 +/-    0.39  0.070 / 0.070
G30     129.7          67.5               11.2 +/-    0.53      12.0 +/-    0.53  0.030 / 0.030